Institution: | 1. Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi''an, 710032, Shaanxi Province, China;2. Department of Nephrology, Yulin First Hospital, Yulin, 718000, Shaanxi Province, China;3. Department of Clinical Epidemiology, Fourth Military Medical University, Xi''an, 710032, Shaanxi Province, China;4. Department of Nephrology, Tangdu Hospital, Fourth Military Medical University, Xi''an, 710038, Shaanxi Province, China |